Answer to: iPhones 3gs broken downIf your not getting power at all the main fuse on the mother board could be blown. Have you tried plugging it into the wall charger to see if it will turn on? That would eliminate the dock connector shorted out. Or Maybe a bum battery. I got a bum one from eBay and seller wouldn't contact me back. The fuse is a small and rectangular shaped, green in color below the vibrating motor.